package Month09.day0919.CSDN_1;

import java.util.Arrays;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] arr = new int[n];
        for (int i = 0; i < arr.length; i++) {
            arr[i] = sc.nextInt();
        }
        Arrays.sort(arr);
        System.out.print(arr[0] + " ");
        for (int i = 1; i < arr.length; i++) {
            if(arr[i] != arr[i - 1]){
                System.out.print(arr[i] + " ");
            }
        }
    }
}
